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	<div id="winchm_template_title">!usbkd._ehciep</div>
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	<div id="winchm_template_content"><div id="mainSection"><p>The  <b>!usbkd._ehciep</b> command displays information from a  <b>usbehci!_ENDPOINT_DATA</b> structure. Use this command to display information about asynchronous endpoints (that is, control and bulk endpoints).</p>
<pre class="syntax"><b>!usbkd._ehciep </b><i>StructAddr</i></pre>
<h2><a id="ddk__devobj_dbg"></a><a id="DDK__DEVOBJ_DBG"></a>Parameters</h2>
<p></p>
<dl>
<dt><a id="_______StructAddr______"></a><a id="_______structaddr______"></a><a id="_______STRUCTADDR______"></a>       <i>StructAddr</i>      </dt>
<dd>
<p>Address of a <b>usbehci!_ENDPOINT_DATA</b> structure. To find addresses of <b>usbehci!_ENDPOINT_DATA</b> structures, use <a href="#Bookmark2577"><b>!usbhcdext</b></a> and <a href="#Bookmark2595"><b>!usblist</b></a>.</p>
</dd>
</dl>
<h2><a id="DLL"></a><a id="dll"></a>DLL</h2>
<p>Usbkd.dll
     </p>
<h2>Examples</h2>
<p>This example shows one way to get the address of a <b>usbehci!_ENDPOINT_DATA</b> structure. Start with the <a href="#Bookmark2569"><b>!usb2tree</b></a> command.</p>
<pre class="syntax" xml:space="preserve"><code>0: kd&gt; !usbkd.usb2tree
...
2)!ehci_info ffffe0000206e1a0 !devobj ffffe0000206e050 PCI: VendorId 8086 DeviceId 293c RevisionId 0002 
    RootHub !hub2_info ffffe000024a61a0 !devstack ffffe000024a6050
        Port 1: !port2_info ffffe000026dd000 
        Port 2: !port2_info ffffe000026ddb40 
        Port 3: !port2_info ffffe000026de680 !devstack ffffe00001ec3060
            !device2_info ffffe00001ec31b0 (USB Mass Storage Device: Xxx Corporation)
        Port 4: !port2_info ffffe000026df1c0 </code></pre>
<p>In the preceding output, the address of the device extension of the FDO is displayed as the argument of the <a href="#Bookmark1377">DML</a> command <b>!ehci_info ffffe0000206e1a0</b>. Either click the DML command  or pass the address of the device extension to <b>!usbhcdext</b>.</p>
<pre class="syntax" xml:space="preserve"><code>0: kd&gt; !usbkd.usbhcdext ffffe0000206e1a0
...
DeviceHandleList: !usblist ffffe0000206f3b8, DL 
DeviceHandleDeletedList: !usblist ffffe0000206f3c8, DL [Empty]
GlobalEndpointList: !usblist ffffe0000206f388, EP 
...</code></pre>
<p>The preceding output displays the command <b>!usblist ffffe0000206f388, EP</b>. Use this command to display a list of endpoints.</p>
<pre class="syntax" xml:space="preserve"><code>0: kd&gt; !usblist ffffe0000206f388, EP 
list: ffffe0000206f388 EP
...
dt usbport!_HCD_ENDPOINT ffffe000026dc970  !usbep ffffe000026dc970
common buffer bytes 0x00003000 (12288) @ va 0000000021e6e000 pa 00000000d83c9000
Device Address: 0x01, ep 0x81 Bulk In Flags: 00000041 dt _USB_ENDPOINT_FLAGS ffffe000026dc990
... usbehci!_ENDPOINT_DATA ffffe000026dcc38
...</code></pre>
<p>In the preceding output,  <code>ffffe000026dcc38</code> is the address of a <b>usbehci!_ENDPOINT_DATA</b> structure. Pass this address to <b>!_ehciep</b>.</p>
<pre class="syntax" xml:space="preserve"><code>0: kd&gt; !usbkd._ehciep ffffe000026dcc38
*USBEHCI
dt usbehci!_ENDPOINT_DATA ffffe000026dcc38
Flags: 0x00000000
dt usbehci!_HCD_QUEUEHEAD_DESCRIPTOR ffffd00021e6e080
*HwQH ffffd00021e6e080
HwQH
	 HwQH.HLink dea2e002
	 HwQH.EpChars 02002101
		 DeviceAddress: 0x1
		 IBit: 0x0
		 EndpointNumber: 0x1
		 EndpointSpeed: 0x2 HcEPCHAR_HighSpeed
		 DataToggleControl: 0x0
		 HeadOfReclimationList: 0x0
		 MaximumPacketLength: 0x200 - 512
   ...
current slot 0000000000000000
slot[0] dt usbehci!_ENDPOINT_SLOT ffffe000026dcdb8 - slot_NotBusy
----
	 ffffd00021e6e100
	 dt usbehci!_HCD_TRANSFER_DESCRIPTOR ffffd00021e6e100
	tdphys: d83c9100'200 txlen 00000000 tx ffffd00000000041 flags 6d4e695d  _BUSY _SLOT_RESET
	Next_qTD: d83c9200'd83c9180 AltNext_qTD 77423c00'41 
	NextTD: ffffd00021e6e200 AltNextTD ffffd00021e6e180 SlotNextTd ffffd00021e6e200 tok 00000c00  Xbytes x0 (0)
.
	 ffffd00021e6e200
	 dt usbehci!_HCD_TRANSFER_DESCRIPTOR ffffd00021e6e200
	tdphys: d83c9200'5000 txlen 00000000 tx ffffd00000000041 flags 6d4e695d  _BUSY _SLOT_RESET
	Next_qTD: d83c9280'd83c9180 AltNext_qTD 77423c00'41 
	NextTD: ffffd00021e6e280 AltNextTD ffffd00021e6e180 SlotNextTd ffffd00021e6e280 tok 00000c00  Xbytes x0 (0)
...</code></pre>
<h2><a id="see_also"></a>See also</h2>
<dl>
<dt><a href="#Bookmark2553">USB 2.0 Debugger Extensions</a></dt>
<dt><a href="http://go.microsoft.com/fwlink/p?LinkID=227351">Universal Serial Bus (USB) Drivers</a></dt></dl></div></div>	
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